fix a possible bug in yaf_config_simple.c

1.    fixed a typo in a final class's protected property, so there can not be any compatibility damage {yaf_route_map.h}
2.    misc typo fixes in documentation
3.    fix a possible bug in yaf_config_simple.c
4.    added TODOs for Yaf_Response methods that needs implementation
5.    fix for #55